The first week of the Carolina Panthers training camp has come and gone. The Panthers rookies have had their first taste of professional football. The adjustment has been easier for some than others.   Kelvin Benjamin - WR - FSU     The Panthers first round draft pick has been better than advertised. Before a small setback when his knee was bruised while making contact with the ground, Benjamin was most impressive. The 6'5 240 rookie has shown his ability to make difficult grabs. His size